Results 181 to 190 of about 107,082 (295)

Salt Cluster With Surface Defect Shows Anomalous Acid–Base Chemistry

Angewandte Chemie International Edition, EarlyView.
The acid displacement of formic acid in sea‐salt aerosols, releasing HCl, challenges conventional acid–base chemistry. Our gas‐phase experiments show that this reaction occurs on pure NaCl cluster ions in the absence of water. Surface defects of the NaCl cluster ions enable this reaction via enhanced electrostatic interactions of the salt ions with the
Jessica C. Hartmann, Jia Yang Lim, Yiqi Sheng, Marc Reimann, Sarah J. Madlener, Christian van der Linde, Chi‐Kit Siu, Martin K. Beyer   +7 more
wiley   +1 more source

Sustainable Ammonia Electrosynthesis Coupled With Glycerol Valorization via an Adaptive Tri‐Component Catalyst

Angewandte Chemie International Edition, EarlyView.
A Cu‐Ni‐W tri‐component catalyst enables efficient nitrate‐to‐ammonia conversion under pulsed electrolysis. Combined experimental and theoretical studies attribute its performance to component synergism and regulated intermediates. Its facile adaptation for glycerol valorization to formic acid underscores a versatile system design concept, advancing ...
Christean Nickel, David Leander Troglauer, Chia‐Yu Chang, Tiansheng Bai, Tobias Rios‐Studer, Ingo Lieberwirth, Kevin Sowa, Boris Mashtakov, Bahareh Feizi Mohazzab, Lijie Ci, Deping Li, Xiaohang Lin, Bing Joe Hwang, Rongji Liu, Dandan Gao   +14 more
wiley   +1 more source

Dual Studies on a Hydrogen-Deuterium Exchange of Resorcinol and the Subsequent Kinetic Isotope Effect. [PDF]

J Chem Educ, 2014
Giles R, Kim I, Chao WE, Moore J, Jung KW.   +4 more
europepmc   +1 more source

Intermolecular Enantioselective Nickel‐Catalyzed Arylation of Un‐Activated C(sp3)─H Bond

Angewandte Chemie International Edition, EarlyView.
Ni: a new solution for asymmetric C(sp3)─H activation. The stereoselective synthesis of all‐carbon quaternary stereogenic centres is achieved via enantioselective C(sp3)─H arylation using a Ni‐BINOL‐derived catalyst. Rational catalytic cycle design uncovers a new reaction pathway that can efficiently induce chiral information during the stereoselective
Erwan Brunard, Fengjie Huang, Àlex Díaz‐Jiménez, Sofiya Kostiukovska, Joanna Wencel‐Delord   +4 more
wiley   +1 more source

Innovative Approach to Hydrogen Purification: A Review on the Role of Metal Hydrides

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Metal hydrides, renowned for their unique hydrogen bonding capabilities, have emerged as pivotal materials in the energy sector, particularly for hydrogen storage and purification applications. Their ability to store hydrogen reversibly under moderate conditions has positioned them at the forefront in hydrogen‐based energy systems. This review
T. Mohammed Faheem, Vinod Kumar Sharma, A. Shaija, Bhaskar Das, Ranjith Krishna Pai   +4 more
wiley   +1 more source

First‐Principles Investigation of the Thermoelectric Behavior of the Orthorhombic Cadmium Stannate (Cd2SnO4)

Advanced Physics Research, EarlyView.
Cd2SnO4 exhibits excellent thermoelectric properties with a high Seebeck coefficient, power factor, and figure of merit, surpassing Bi2Te3. It shows both positive and negative Seebeck coefficient values, making it suitable for diverse applications. Its high electrical conductivity and low thermal conductivity enhance efficiency, while its negative Hall
Adel Bandar Alruqi, Nicholas O. Ongwen
wiley   +1 more source

Atomically Thin Sieves: Two‐Dimensional Materials for Membrane Separation

Advanced Physics Research, EarlyView.
Atomically thin membranes derived from 2D materials overcome the inherent selectivity‐permeability trade‐off in conventional separation technologies. This perspective elucidates transport mechanisms for gases, water, and ions, surveys fabrication strategies including top‐down pore engineering and bottom‐up synthesis, highlights recent experimental and ...
Yiran Gong, Pengzhan Sun, Yu Ji
wiley   +1 more source

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

One-Pot Base-Free Suzuki-Miyaura [¹¹C]Methylation: Kinetic and Mechanistic Insights. [PDF]

Chemistry
Moreno O, Azzeggarh I, Holland JP, Windhorst AD, Llop J.   +4 more
europepmc   +1 more source

Selective Synthesis of N,N‐Dimethylformamide From CO2 Hydrogenation Coupled With Dimethylamine Over a ZnZrOx Solid‐Solution Catalyst

Carbon and Hydrogen, EarlyView.
N‐formylation of dimethylamine though CO2 hydrogenation takes place at a ZnZrOx solid‐solution catalyst surface toward N,N‐dimethylformamide. By synergistic effect of Zn and Zr sites, the catalyst achieves 99% DMF selectivity at 14% DMA conversion at 280°C with at least 1000 h stability on steam.
Jinxin He, Huan Zhang, Junming Yang, Lin Zhang, Fangyun Su, Masheng Yang, Junqi Tian, Xiaoying Chen, Yutong Wang, Jieyun Zhang, Zelong Li   +10 more
wiley   +1 more source